Peocess of and machine for billet forming



I 5 Sheets-Sheet 1. H. S. SMITH, P H. TREAT 8a 0. PETTIGREW.

(No Model.)

PROCESS OF AND MACHINE FOR BILLET FORMING. No. 455,063.

Patented June 30, 1891.

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rate $771557? rancis raw,

(No Model.) 5 Sheets-Sheet 2.

H. S. SMITH, F. H. TREAT & C. PETTIGREW. PROCESS OF AND MACHINE POR'BILLETIORMING,

No. 455,063. Patented June 30. 1891.

(No Model.) 5 Sheets-Sheet 3.

H. S. SMITH, P. H. TREAT 8r. 0. PETTIGREW.

PROCESS OF AND MACHINE Eon-BILLET- FORMING.

No. 455,063. Patented June 30,, 1891.

lilllli (No Model.) '5 Sheets-Sheet 4.

' H. s. SMITH, P. H. TREAT & 0. PETTIGREW.

PROCESS OF AND MACHINE FOR BILLET FORMING. L

No. 455,063. Patented'June 30,1891.

m: mm! Wrens ca, mow-mum, wummnou, o. c.

(No Model.) 5 Sheets-Sheet 5.

H. s; SMITH, F. H. TREAT & 0.v PETTIGREW. PROGESS OF AND MACHINE FOR BILLET FORMING.

No. 455,063. j PatentedJ une so, 1891.

UNITED I STATES PATENT OFFICE.

HORACE S. SMITl-I AND.FRANCIS H. TREAT, OF CHICAGO, AND CHARLES PETTIGREW, OF .TOLIET, ASSIGNORS TO THE ILLINOIS STEEL COMPANY,

OF CHICAGO, ILLINOIS.

PROCESS OF AND MACHINE FOR BlLLET-FORMING.

SPECIFICATION forming part of Letters Patent No. 455,063, dated June 30, 1891.

Application filed July 18, 1890. Serial No. 359,153. (No model.)

labor to complete the production of perfectbillets from the ingot, continually supplying 1 5 the ingots to the apparatus and removing the billets without any manual interposition what-' ever, excepting such as may be required to control the machinery.

Our invention will be readily understood from the accompanying drawings, in which Figure 1 represents a plan view of the apparatus generally, showing the relation of the parts; Fig. 2, a plan view more in detail of the blooming-mill; Fig. 3, a plan View of the' shears and mechanism for removing the ends of the blooms; Fig. 4, a plan view of the billet-mill; Fig. 5, a plan view of the billetshears and billet-conveyer; Fig. 6, a view of the ingot, and Fig. '7 a View of the completed 0 billet. Figs. 2, 3, at, and 5 follow in succession in the process, and are supposed to be connected together, as shown in the general plan, Fig. 1. Y

A represents, generally, the blooming-mill 3 5 with automatic transfer-tables and powerrolls, having passes adapted to produce a bloom having a square section. The ingot is fed through these rollers a sufficient number of times to reduce it to the desired section,

40 and is then carried on the transfer-table B to be delivered to the automatic shears. The transfer-table B feeds it to the transfer-table C, independently operated through a reversible power D. The forward end of the bloom is liable to be imperfect and to contain cavities, and this is therefore removed by the shears E, operated from suitable power mechanism, the piece of the bloom dropping upon the conveyer F, by which it is removed from the path of the advanoingbloom. The bloom I is then carried to the transfer-table G and.

thence to the transfer-table I-I, independently operated, which feeds the billet-mill J, the passes of which are arranged to produce the billets square in section. The billet is passed forward and backward a sufficient number of times to reduce it to the desired section, and

is then fed outward upon the transfer-table to the transfer-rollers K, which deliver the billets'to either channel L L of the billet- 6o shears M M, which cut the billetsinto the desired lengths and drop them to the billet-conveyer N, whence they are removed to be utilized in the subsequent operations. These shears are alternately operated by the steam or hydraulic motor P.

We do not in this application show the detail of the billet-shears and billet-conveyer, the same being shown in other applications filed by us July 18, 1890, Serial Nos. 359,140 7'0 and 359,152. e do notin this application claim the detail of said billet-shears and billetconveyer. V

The operation of our process can now be readily understood. The heated ingot is passed rapidly through the blooming-mill, thence, without allowing it to cool, to the bloom-shears, where the imperfect end is removed. Thence the metal passes onward to the billet-mill, without reheating and automatically, where it is reduced to the proper transverse section, and thence the still hot metal without reheating is fed to the billetshears, where it is cut off in desired lengths, and thence it falls upon the conveyer to be 8 carried away for separate use. This process requires likewise a peculiar mechanism in which the transfer-tables must be independently operated, and the said process is new in the accomplishment of these results autooo matically and at one heat. 7

That we claim as our invention, and desire to secure by Letters Patent, is'

1. The process of forming a short billet from an ingot automatically and at one heat, which consists in reducing the hot ingot to a bloom, in feeding the same mechanically to a shears, removing the imperfect end, feeding said bloom mechanically to the billet-milhreducing it to the section of a billet, feeding it to the billet-shears, shearing the proper length of billet, and mechanically removingthe bil let, all at one heat and without the interposition of manual labor, substantially as doscribed.

52. The combination, in a billet-mill, of a blooming-mill, a transfer-table for feeding the ingot to the mill and the bloom from the mill, an independent reversible transfer-table combined With said second table and feeding the bloom tothe bloon1-shears,a bloonrshears operating on the bloom so fed on said table, a transfer-table to feed said bloom onward, a

reversible transfer-table connected therewith and receiving said bloom and feeding it to the 

